Let's roll up our sleeves and solve this. We have 988 and we're going to multiply it by 153, essentially adding 988 to itself 153 times.
Step 1: 0 + 988 = 988
Step 2: 988 + 988 = 1976
Step 3: 1976 + 988 = 2964
Step 4: 2964 + 988 = 3952
Step 5: 3952 + 988 = 4940
Step 6: 4940 + 988 = 5928
Step 7: 5928 + 988 = 6916
Step 8: 6916 + 988 = 7904
Step 9: 7904 + 988 = 8892
Step 10: 8892 + 988 = 9880
Step 11: 9880 + 988 = 10868
Step 12: 10868 + 988 = 11856
Step 13: 11856 + 988 = 12844
Step 14: 12844 + 988 = 13832
Step 15: 13832 + 988 = 14820
Step 16: 14820 + 988 = 15808
Step 17: 15808 + 988 = 16796
Step 18: 16796 + 988 = 17784
Step 19: 17784 + 988 = 18772
Step 20: 18772 + 988 = 19760
Step 21: 19760 + 988 = 20748
Step 22: 20748 + 988 = 21736
Step 23: 21736 + 988 = 22724
Step 24: 22724 + 988 = 23712
Step 25: 23712 + 988 = 24700
Step 26: 24700 + 988 = 25688
Step 27: 25688 + 988 = 26676
Step 28: 26676 + 988 = 27664
Step 29: 27664 + 988 = 28652
Step 30: 28652 + 988 = 29640
Step 31: 29640 + 988 = 30628
Step 32: 30628 + 988 = 31616
Step 33: 31616 + 988 = 32604
Step 34: 32604 + 988 = 33592
Step 35: 33592 + 988 = 34580
Step 36: 34580 + 988 = 35568
Step 37: 35568 + 988 = 36556
Step 38: 36556 + 988 = 37544
Step 39: 37544 + 988 = 38532
Step 40: 38532 + 988 = 39520
Step 41: 39520 + 988 = 40508
Step 42: 40508 + 988 = 41496
Step 43: 41496 + 988 = 42484
Step 44: 42484 + 988 = 43472
Step 45: 43472 + 988 = 44460
Step 46: 44460 + 988 = 45448
Step 47: 45448 + 988 = 46436
Step 48: 46436 + 988 = 47424
Step 49: 47424 + 988 = 48412
Step 50: 48412 + 988 = 49400
Step 51: 49400 + 988 = 50388
Step 52: 50388 + 988 = 51376
Step 53: 51376 + 988 = 52364
Step 54: 52364 + 988 = 53352
Step 55: 53352 + 988 = 54340
Step 56: 54340 + 988 = 55328
Step 57: 55328 + 988 = 56316
Step 58: 56316 + 988 = 57304
Step 59: 57304 + 988 = 58292
Step 60: 58292 + 988 = 59280
Step 61: 59280 + 988 = 60268
Step 62: 60268 + 988 = 61256
Step 63: 61256 + 988 = 62244
Step 64: 62244 + 988 = 63232
Step 65: 63232 + 988 = 64220
Step 66: 64220 + 988 = 65208
Step 67: 65208 + 988 = 66196
Step 68: 66196 + 988 = 67184
Step 69: 67184 + 988 = 68172
Step 70: 68172 + 988 = 69160
Step 71: 69160 + 988 = 70148
Step 72: 70148 + 988 = 71136
Step 73: 71136 + 988 = 72124
Step 74: 72124 + 988 = 73112
Step 75: 73112 + 988 = 74100
Step 76: 74100 + 988 = 75088
Step 77: 75088 + 988 = 76076
Step 78: 76076 + 988 = 77064
Step 79: 77064 + 988 = 78052
Step 80: 78052 + 988 = 79040
Step 81: 79040 + 988 = 80028
Step 82: 80028 + 988 = 81016
Step 83: 81016 + 988 = 82004
Step 84: 82004 + 988 = 82992
Step 85: 82992 + 988 = 83980
Step 86: 83980 + 988 = 84968
Step 87: 84968 + 988 = 85956
Step 88: 85956 + 988 = 86944
Step 89: 86944 + 988 = 87932
Step 90: 87932 + 988 = 88920
Step 91: 88920 + 988 = 89908
Step 92: 89908 + 988 = 90896
Step 93: 90896 + 988 = 91884
Step 94: 91884 + 988 = 92872
Step 95: 92872 + 988 = 93860
Step 96: 93860 + 988 = 94848
Step 97: 94848 + 988 = 95836
Step 98: 95836 + 988 = 96824
Step 99: 96824 + 988 = 97812
Step 100: 97812 + 988 = 98800
Step 101: 98800 + 988 = 99788
Step 102: 99788 + 988 = 100776
Step 103: 100776 + 988 = 101764
Step 104: 101764 + 988 = 102752
Step 105: 102752 + 988 = 103740
Step 106: 103740 + 988 = 104728
Step 107: 104728 + 988 = 105716
Step 108: 105716 + 988 = 106704
Step 109: 106704 + 988 = 107692
Step 110: 107692 + 988 = 108680
Step 111: 108680 + 988 = 109668
Step 112: 109668 + 988 = 110656
Step 113: 110656 + 988 = 111644
Step 114: 111644 + 988 = 112632
Step 115: 112632 + 988 = 113620
Step 116: 113620 + 988 = 114608
Step 117: 114608 + 988 = 115596
Step 118: 115596 + 988 = 116584
Step 119: 116584 + 988 = 117572
Step 120: 117572 + 988 = 118560
Step 121: 118560 + 988 = 119548
Step 122: 119548 + 988 = 120536
Step 123: 120536 + 988 = 121524
Step 124: 121524 + 988 = 122512
Step 125: 122512 + 988 = 123500
Step 126: 123500 + 988 = 124488
Step 127: 124488 + 988 = 125476
Step 128: 125476 + 988 = 126464
Step 129: 126464 + 988 = 127452
Step 130: 127452 + 988 = 128440
Step 131: 128440 + 988 = 129428
Step 132: 129428 + 988 = 130416
Step 133: 130416 + 988 = 131404
Step 134: 131404 + 988 = 132392
Step 135: 132392 + 988 = 133380
Step 136: 133380 + 988 = 134368
Step 137: 134368 + 988 = 135356
Step 138: 135356 + 988 = 136344
Step 139: 136344 + 988 = 137332
Step 140: 137332 + 988 = 138320
Step 141: 138320 + 988 = 139308
Step 142: 139308 + 988 = 140296
Step 143: 140296 + 988 = 141284
Step 144: 141284 + 988 = 142272
Step 145: 142272 + 988 = 143260
Step 146: 143260 + 988 = 144248
Step 147: 144248 + 988 = 145236
Step 148: 145236 + 988 = 146224
Step 149: 146224 + 988 = 147212
Step 150: 147212 + 988 = 148200
Step 151: 148200 + 988 = 149188
Step 152: 149188 + 988 = 150176
Step 153: 150176 + 988 = 151164

So, 988*153 = 151164